With the brisk and rainy weather, there's no denying that fall has arrived.

As celebrities respond to the seasonal change with warm outerwear, some also take a stance on fashion's fur issue.

Whether their fur coats are real or faux, these stars are going for the classic and controversial material.

Sienna Miller was spotted on a romantic night out with on-again off-again boyfriend Jude Law in this plush grey fur coat and matching shorts.

Could their feelings for one another once again be as warm and fuzzy as her coat?

Kim and Kourtney Kardashian stepped out in NYC in some pretty audacious fur coats to film an episode of their reality show Kim and Kourtney Take New York. The sisters looked glamorous when Kim paired her strong-shouldered black fur coat with a floppy felt hat, and Kourtney wore her three-quarter sleeved cream-colored fur coat with a turban-style jeweled headband (left). French model Elisa Sednaoui wore a furry black vest to the Chanel Ready to Wear Spring/Summer 2011 show during Paris Fashion Week (right).

Don't feel comfortable with fur outerwear for fall? You can always go faux!